Description Of Parts - Comelit FT SB2 18 Hoja Técnica

WARNING
• Install the equipment by carefully following the instructions given by the manufacturer and in compliance with the legislation in force.
• All the equipment must only be used for the purpose it was designed for. Comelit Group S.p.A. does not assume responsibility for improper
use of the appliances, for modifications made by others for any reason or purpose, or for non-original accessories and materials.
• All products comply with the requirements of the 2006/95/CE directives (which replace the 73/23/CEE directives and subsequent amendments), as certified by
the CE mark on the products.
• Do not route the riser wires in proximity to power supply cables (230/400V).
USER SHUNT MODULE WITH INCORPORATED LINE
PROTECTION ART. 1415
Art. 1415 allows the branching of up to 4 internal units (with different address
for each output) from the riser, and also acts as line protection, isolating the
branches in case of excessive absorption or short circuit. The device can be
used in systems with Simplebus 2 and Simplebus Color wiring and does not
require any additional power supply, in being fed by the 2-wire bus. Up to 100
users can be connected for each mixer Art. 4888, Art. 4888C irrespective of
the number of Art. 1415 used, and up to 3 internal units can be connected in
cascade for each output of Art. 1415.
Fig. 1

DESCRIPTION OF PARTS

1 JP1 (L4L4), JP3 (L3L3), JP5 (L2L2), JP7 (L1L1) jumper to reinstate the
branch line after a short circuit.
2 JP2 (L4L4), JP4 (L3L3), JP6 (L2L2), JP8 (L1L1) jumper for setting of
connection distances.
3 L1L1, L2L2, L3L3, L4L4 branch line output terminals.
4 L IN L IN BUS line input.
L OUT L OUT BUS line output.
LINE PROTECTION FUNCTION
The line protection function allows the branch line to be automatically isolated
in case of short circuit. If this occurs, the corresponding output LED lights up to
signal the fault (Fig. 2A). To reinstate the line, after eliminating the problem it is
necessary to move the output jumper to position B until the LED (Fig. 2B) goes
off, then move the jumper to position A (Fig. 2C).
Fig. 2A Fig. 2B
For correct operation, use this product only in conjunction with the
following mixers having the same or higher revision index to that
indicated, Art. 4888 (VER. 003), Art. 4888C (VER. 004), Art. 4888CU
(VER. 001).
The revision index of the mixers can be found on the inside of the door
(Fig. 3).
Fig. 3
JUMPER SETTING FOR CONNECTION DISTANCES
Depending on the type of cable used and the distance between the furthest internal unit
of the user branch and the mixer, the jumper of the output in use must be arranged
according to the settings given in Table 1.
For all other distances refer to MT/SBC/01, MT/SB2/01, FT/SBC/04 and FT/SB2/15.
Table 1
Comelit cable Art. 4577
cross section 1 mm 2 (Ø
1.2 mm AWG 17)
Double-wire cable cross
section mm 2 1.5 (Ø 1.4 mm
AWG 15)
Braided and screened
cable cross section 1 mm
(Ø 1.2 mm AWG 17)
Fig. 2C
Twisted telephone pair
cross section 0.28 mm 2
(Ø 0.6 mm AWG 23)
UTP5 Cat 5 AWG 24
cable cross section 0.2
2
mm (Ø 0.5 mm AWG 24)
Double-wire cable cross
section 0.5 mm 2 (Ø 0.8
mm AWG 20)
FT SB2 18
Max. distance between Art. 1214/2 Max. distance between Mixer and
and the furthest internal unit the furthest internal unit.
60 m 200 m
(195 feet) (650 feet)
40 m 150 m
(130 feet) (495 feet)
30 m 120 m
2
(95 feet) (390 feet)
70 m
40 m
(225 feet)
100 m
(130 feet)
(325 feet)
50 m
40 m
(160 feet)
80 m
(130 feet)
(260 feet)
80 m
(260 feet)
40 m
120 m
(130 feet)
(390 feet)
Position of jumper
JP2, JP4, JP6, JP8
Pos A
Pos A
Pos A
Pos A
Pos B
Pos A
Pos B
Pos A
Pos B
3 FT SB2 18